kbuild: Disable -Wunused-but-set-variable for gcc 4.6.0
Disable the new -Wunused-but-set-variable that was added in gcc 4.6.0
It produces more false positives than useful warnings.
This can still be enabled using W=1
Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Tested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 9c0c481..9fb19c0 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -66,6 +66,7 @@
warning-1 += -Wmissing-prototypes
warning-1 += -Wold-style-definition
warning-1 += $(call cc-option, -Wmissing-include-dirs)
+warning-1 += $(call cc-option, -Wunused-but-set-variable)
warning-2 := -Waggregate-return
warning-2 += -Wcast-align